A method of constructing an in-ground swimming pool may include positioning outer form panels in side-by-side relation defining an outer form wall within an excavated area of ground corresponding to a desired in-ground swimming pool shape. Each outer form panel may have opposing inner and outer sides and a support member bracket extending from the outer side. The method may also include positioning inner form panels in side-by-side relation and in spaced relation from the inner side of the outer form panels to define an inner form wall. The inner and outer form walls may define a wall space therebetween, and each inner form panel may have opposing inner and outer sides. The method may also include coupling support members over the wall space and to the outer side of the inner form panels and to respective ones of the support member brackets.

A wall segment for use in a wall system may comprise: a first sidewall; a second sidewall disposed opposite the first sidewall, the first sidewall and second sidewall defining a cavity therebetween; and a webbing system disposed between the first sidewall and the second sidewall.

A modular panel made of plastic material for manufacturing pool walls comprises: a generally rectangular main body of which a first surface is intended for being oriented toward the inside of the pool, the lengths of the main body defining a reference plane; a complementary body capable of being attached to a second surface of the main body and defining a hollow column intended for receiving concrete, wherein the first surface has an initial convex transverse curve on the width of the main body in a plastic injection mold, the maximum amplitude of the transverse curve relative to the reference plane being selected to compensate for all or part of the deformations that occur between the removal from the mold and the setting of the concrete, in the transverse and longitudinal directions.

A formation aid, for use in the forming of receptacles in a swimming pool, includes a three-dimensional body having an essentially conical shape. The three-dimensional body of the formation aid includes a narrow end, for placement near an interior edge of the swimming pool during formation of the swimming pool; and a wide end, for placement remote from the interior edge of the swimming pool, in order to form a receptacle.

A formation aid, for use in the forming of receptacles in a swimming pool, includes a three-dimensional body having an essentially conical shape. The three-dimensional body of the formation aid includes a narrow end, for placement near an interior edge of the swimming pool during formation of the swimming pool; and a wide end, for placement remote from the interior edge of the swimming pool, in order to form a receptacle.

A formation aid, for use in the forming of receptacles in a swimming pool, includes a three-dimensional body having an essentially conical shape. The three-dimensional body of the formation aid includes a narrow end, for placement near an interior edge of the swimming pool during formation of the swimming pool; and a wide end, for placement remote from the interior edge of the swimming pool, in order to form a receptacle.

A method of manufacturing a concrete filled structure comprises coupling a plurality of wall segments together to form a wall structure; disposing a first plurality of rebar within the wall structure; and filling a cavity of the wall structure with concrete to form the concrete filled structure.

A formation aid, for use in the forming of receptacles in a swimming pool, includes a three-dimensional body having an essentially conical shape. The three-dimensional body of the formation aid includes a narrow end, for placement near an interior edge of the swimming pool during formation of the swimming pool; and a wide end, for placement remote from the interior edge of the swimming pool, in order to form a receptacle.

A formation aid, for use in the forming of receptacles in a swimming pool, includes a three-dimensional body having an essentially conical shape. The three-dimensional body of the formation aid includes a narrow end, for placement near an interior edge of the swimming pool during formation of the swimming pool; and a wide end, for placement remote from the interior edge of the swimming pool, in order to form a receptacle.

A fixture for setting rebar at a predetermined distance from the rim of an excavated pit includes elongated first and second legs each having a proximal end and a distal end, the first and second legs rigidly joined at their mutual proximal ends to form an L-shape; an angle adjustment device carried by the first leg, comprising a foot movable towards or away from the first leg along an axis generally parallel to the second leg; a support bracket carried by the first leg at a predetermined offset distance from the proximal end thereof; and a hook extending from the distal end of the second leg, generally parallel to the first leg.